in the length of the pendulum vibrating seconds. 4 65 
August 18, A. M. Portsoy. — 2d Series. 
Clock gaining 42%! 8 Barometer 30,14 inches. 
Temp. 
Time of coin- 
cidence. 
Arc 
of vibra- 
tion. 
Mean 
Arc. 
Interval 
in 
seconds. 
No of 
vibrations. 
Observed 
vibrations 
in 24 hours. 
Correc- 
tion for 
Arc. 
Vibrations 
in 24 hours. 
58°4 
58,5 
h. m. 
7.32.46 
40.41 
48.37 
56-33 
8. 4.29 
12 25 
20.21 
28.18 
36.15 
44.12 
52. 9 
1,20 
1,16 
1,10 
1,06 
1,01 
0,98 
0,93 
0,89 
0,85 
0,81 
0,78 
0 
1,18 
1,13 
1,08 
1,03 
0,99 
0,95 
0,91 
0,87 
0,83 
0,79 
475 
476 
476 
476 
476 
476 
4 77 
477 
477 
477 
S. 
2,28 
2,00 
1,91 
1,74 
1,60 
1,48 
1,36 
1,24 
1,13 
1,02 
58,4 
Mean 
476,3 
474,3 
86079,20 
1,59 
86080,79 
August 18, P. M. Barometer 30,14 inches. 
59.7 
60.7 
1. 0.54 
8.49 
1 6.44 
24 39 
32.34 
40.29 
48.25 
56.21 
2. 4.17 
12.13 
20. 9 
1,21 
1,15 
1,10 
1,06 
1,01 
0,97 
0,93 
^',b9 
0,85 
0,82 
0,79 
1,18 
1,12 
1,08 
1,03 
0,99 
0,95 
0,91 
0,87 
0,83 
0,80 
475 
475 
475 
475 
475 
476 
476 
476 
476 
476 
2,28 
2,06 
1,92 
1,74 
1,60 
1,48 
1,36 
1,24 
1,13 
1,05 
60,2 
Mean 
475,5 
473,5 
86078,59 
1,59 
86080,18 
